slapos.collect: allow connect without call boostrap, set timeout option

slapos/collect/db.py

@@ -121,15 +121,17 @@ class Database:
             " date, time) values "\
             "( '%s', '%s', %s, %s, %s, %s, '%s', '%s' )"
 
-  def __init__(self, directory = None):
+  def __init__(self, directory = None, create = True, timeout=None):
     assert self.database_name is not None
     self.uri = os.path.join(directory, self.database_name)
     self.connection = None
     self.cursor = None
-    self._bootstrap()
+    self.timeout = timeout
+    if create:
+      self._bootstrap()
 
   def connect(self):
-    self.connection = sqlite_connect(self.uri)
+    self.connection = sqlite_connect(self.uri, timeout=self.timeout)
     self.cursor = self.connection.cursor()
 
   def commit(self):

slapos/util.py

@@ -97,7 +97,10 @@ def string_to_boolean(string):
     raise ValueError('%s is neither True nor False.' % string)
 
 
-def sqlite_connect(dburi):
-  conn = sqlite3.connect(dburi)
+def sqlite_connect(dburi, timeout=None):
+  connect_kw = {}
+  if timeout is not None:
+    connect_kw['timeout'] = timeout
+  conn = sqlite3.connect(dburi, **connect_kw)
   conn.text_factory = str       # allow 8-bit strings
   return conn